import cv2

img = cv2.imread('statue_small.jpg')
r1 = cv2.Canny(img, 10, 50)
r2 = cv2.Canny(img, 100, 200)
r3 = cv2.Canny(img, 400, 600)

cv2.imshow('img', img)
cv2.imshow('r1', r1)
cv2.imshow('r2', r2)
cv2.imshow('r3', r3)

cv2.waitKey()
cv2.destroyAllWindows()
